str = "fewfaewfffavaf"
mp = dict()
a = -1

for i in str:
    if i in mp:
        mp[i] += 1
    else:
        mp[i] = 1


print(mp)
print(mp[str[0]])
for s in range(len(str)):
    if mp[str[s]] == 1:
        a = s
        break

print(a)


